/*
 * IRremote
 * Version 0.1 July, 2009
 * Copyright 2009 Ken Shirriff
 * For details, see http://arcfn.com/2009/08/multi-protocol-infrared-remote-library.html
 *
 * Modified by Paul Stoffregen <paul@pjrc.com> to support other boards and timers
 *
 * Interrupt code based on NECIRrcv by Joe Knapp
 * http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1210243556
 * Also influenced by http://zovirl.com/2008/11/12/building-a-universal-remote-with-an-arduino/
 */

#ifndef IRremoteint_h
#define IRremoteint_h

#include <WProgram.h>

// define which timer to use
//
// Uncomment the timer you wish to use on your board.  If you
// are using another library which uses timer2, you have options
// to switch IRremote to use a different timer.

// Arduino Mega
#if defined(__AVR_ATmega1280__)
  //#define IR_USE_TIMER1   // tx = pin 11
  #define IR_USE_TIMER2     // tx = pin 9
  //#define IR_USE_TIMER3   // tx = pin 5
  //#define IR_USE_TIMER4   // tx = pin 6
  //#define IR_USE_TIMER5   // tx = pin 46

// Teensy 1.0
#elif defined(__AVR_AT90USB162__)
  #define IR_USE_TIMER1     // tx = pin 17

// Teensy 2.0
#elif defined(__AVR_ATmega32U4__)
  //#define IR_USE_TIMER1   // tx = pin 14
  //#define IR_USE_TIMER3   // tx = pin 9
  #define IR_USE_TIMER4_HS  // tx = pin 10

// Teensy++ 1.0 & 2.0
#elif defined(__AVR_AT90USB646__) || defined(__AVR_AT90USB1286__)
  //#define IR_USE_TIMER1   // tx = pin 25
  #define IR_USE_TIMER2     // tx = pin 1
  //#define IR_USE_TIMER3   // tx = pin 16

// Sanguino
#elif defined(__AVR_ATmega644P__) || defined(__AVR_ATmega644__)
  //#define IR_USE_TIMER1   // tx = pin 13
  #define IR_USE_TIMER2     // tx = pin 14

// Arduino Duemilanove, Diecimila, LilyPad, Mini, Fio, etc
#else
  //#define IR_USE_TIMER1   // tx = pin 9
  #define IR_USE_TIMER2     // tx = pin 3
#endif



#ifdef F_CPU
#define SYSCLOCK F_CPU     // main Arduino clock
#else
#define SYSCLOCK 16000000  // main Arduino clock
#endif

#define ERR 0
#define DECODED 1


// defines for setting and clearing register bits
#ifndef cbi
#define cbi(sfr, bit) (_SFR_BYTE(sfr) &= ~_BV(bit))
#endif
#ifndef sbi
#define sbi(sfr, bit) (_SFR_BYTE(sfr) |= _BV(bit))
#endif


// pulse parameters in usec
#define NEC_HDR_MARK	9000
#define NEC_HDR_SPACE	4500
#define NEC_BIT_MARK	560
#define NEC_ONE_SPACE	1600
#define NEC_ZERO_SPACE	560
#define NEC_RPT_SPACE	2250

#define SONY_HDR_MARK	2400
#define SONY_HDR_SPACE	600
#define SONY_ONE_MARK	1200
#define SONY_ZERO_MARK	600
#define SONY_RPT_LENGTH 45000

#define RC5_T1		889
#define RC5_RPT_LENGTH	46000

#define RC6_HDR_MARK	2666
#define RC6_HDR_SPACE	889
#define RC6_T1		444
#define RC6_RPT_LENGTH	46000

#define SHARP_BIT_MARK 245
#define SHARP_ONE_SPACE 1805
#define SHARP_ZERO_SPACE 795
#define SHARP_GAP 600000
#define SHARP_TOGGLE_MASK 0x3FF
#define SHARP_RPT_SPACE 3000

#define DISH_HDR_MARK 400
#define DISH_HDR_SPACE 6100
#define DISH_BIT_MARK 400
#define DISH_ONE_SPACE 1700
#define DISH_ZERO_SPACE 2800
#define DISH_RPT_SPACE 6200
#define DISH_TOP_BIT 0x8000

#define SHARP_BITS 15
#define DISH_BITS 16

#define TOLERANCE 25  // percent tolerance in measurements
#define LTOL (1.0 - TOLERANCE/100.) 
#define UTOL (1.0 + TOLERANCE/100.) 

#define _GAP 5000 // Minimum map between transmissions
#define GAP_TICKS (_GAP/USECPERTICK)

#define TICKS_LOW(us) (int) (((us)*LTOL/USECPERTICK))
#define TICKS_HIGH(us) (int) (((us)*UTOL/USECPERTICK + 1))

#ifndef DEBUG
#define MATCH(measured_ticks, desired_us) ((measured_ticks) >= TICKS_LOW(desired_us) && (measured_ticks) <= TICKS_HIGH(desired_us))
#define MATCH_MARK(measured_ticks, desired_us) MATCH(measured_ticks, (desired_us) + MARK_EXCESS)
#define MATCH_SPACE(measured_ticks, desired_us) MATCH((measured_ticks), (desired_us) - MARK_EXCESS)
// Debugging versions are in IRremote.cpp
#endif

// receiver states
#define STATE_IDLE     2
#define STATE_MARK     3
#define STATE_SPACE    4
#define STATE_STOP     5

// information for the interrupt handler
typedef struct {
  uint8_t recvpin;           // pin for IR data from detector
  uint8_t rcvstate;          // state machine
  uint8_t blinkflag;         // TRUE to enable blinking of pin 13 on IR processing
  unsigned int timer;     // state timer, counts 50uS ticks.
  unsigned int rawbuf[RAWBUF]; // raw data
  uint8_t rawlen;         // counter of entries in rawbuf
} 
irparams_t;

// Defined in IRremote.cpp
extern volatile irparams_t irparams;

// IR detector output is active low
#define MARK  0
#define SPACE 1

#define TOPBIT 0x80000000

#define NEC_BITS 32
#define SONY_BITS 12
#define MIN_RC5_SAMPLES 11
#define MIN_RC6_SAMPLES 1




// defines for timer2 (8 bits)
#if defined(IR_USE_TIMER2)
#define TIMER_RESET
#define TIMER_ENABLE_PWM     (TCCR2A |= _BV(COM2B1))
#define TIMER_DISABLE_PWM    (TCCR2A &= ~(_BV(COM2B1)))
#define TIMER_ENABLE_INTR    (TIMSK2 = _BV(OCIE2A))
#define TIMER_DISABLE_INTR   (TIMSK2 - 0)
#define TIMER_INTR_NAME      TIMER2_COMPA_vect
#define TIMER_CONFIG_KHZ(val) ({ \
  const uint8_t pwmval = SYSCLOCK / 2000 / (val); \
  TCCR2A = _BV(WGM20); \
  TCCR2B = _BV(WGM22) | _BV(CS20); \
  OCR2A = pwmval; \
  OCR2B = pwmval / 3; \
})
#define TIMER_COUNT_TOP      (SYSCLOCK * USECPERTICK / 1000000)
#if (TIMER_COUNT_TOP < 256)
#define TIMER_CONFIG_NORMAL() ({ \
  TCCR2A = _BV(WGM21); \
  TCCR2B = _BV(CS20); \
  OCR2A = TIMER_COUNT_TOP; \
  TCNT2 = 0; \
})
#else
#define TIMER_CONFIG_NORMAL() ({ \
  TCCR2A = _BV(WGM21); \
  TCCR2B = _BV(CS21); \
  OCR2A = TIMER_COUNT_TOP / 8; \
  TCNT2 = 0; \
})
#endif
#if defined(CORE_OC2B_PIN)
#define TIMER_PWM_PIN        CORE_OC2B_PIN  /* Teensy */
#elif defined(__AVR_ATmega1280__)
#define TIMER_PWM_PIN        9  /* Arduino Mega */
#elif defined(__AVR_ATmega644P__) || defined(__AVR_ATmega644__)
#define TIMER_PWM_PIN        14 /* Sanguino */
#else
#define TIMER_PWM_PIN        3  /* Arduino Duemilanove, Diecimila, LilyPad, etc */
#endif


// defines for timer1 (16 bits)
#elif defined(IR_USE_TIMER1)
#define TIMER_RESET
#define TIMER_ENABLE_PWM     (TCCR1A |= _BV(COM1A1))
#define TIMER_DISABLE_PWM    (TCCR1A &= ~(_BV(COM1A1)))
#define TIMER_ENABLE_INTR    (TIMSK1 = _BV(OCIE1A))
#define TIMER_DISABLE_INTR   (TIMSK1 = 0)
#define TIMER_INTR_NAME      TIMER1_COMPA_vect
#define TIMER_CONFIG_KHZ(val) ({ \
  const uint16_t pwmval = SYSCLOCK / 2000 / (val); \
  TCCR1A = _BV(WGM11); \
  TCCR1B = _BV(WGM13) | _BV(CS10); \
  ICR1 = pwmval; \
  OCR1A = pwmval / 3; \
})
#define TIMER_CONFIG_NORMAL() ({ \
  TCCR1A = 0; \
  TCCR1B = _BV(WGM12) | _BV(CS10); \
  OCR1A = SYSCLOCK * USECPERTICK / 1000000; \
  TCNT1 = 0; \
})
#if defined(CORE_OC1A_PIN)
#define TIMER_PWM_PIN        CORE_OC1A_PIN  /* Teensy */
#elif defined(__AVR_ATmega1280__)
#define TIMER_PWM_PIN        11  /* Arduino Mega */
#elif defined(__AVR_ATmega644P__) || defined(__AVR_ATmega644__)
#define TIMER_PWM_PIN        13 /* Sanguino */
#else
#define TIMER_PWM_PIN        9  /* Arduino Duemilanove, Diecimila, LilyPad, etc */
#endif


// defines for timer3 (16 bits)
#elif defined(IR_USE_TIMER3)
#define TIMER_RESET
#define TIMER_ENABLE_PWM     (TCCR3A |= _BV(COM3A1))
#define TIMER_DISABLE_PWM    (TCCR3A &= ~(_BV(COM3A1)))
#define TIMER_ENABLE_INTR    (TIMSK3 = _BV(OCIE3A))
#define TIMER_DISABLE_INTR   (TIMSK3 = 0)
#define TIMER_INTR_NAME      TIMER3_COMPA_vect
#define TIMER_CONFIG_KHZ(val) ({ \
  const uint16_t pwmval = SYSCLOCK / 2000 / (val); \
  TCCR3A = _BV(WGM31); \
  TCCR3B = _BV(WGM33) | _BV(CS30); \
  ICR3 = pwmval; \
  OCR3A = pwmval / 3; \
})
#define TIMER_CONFIG_NORMAL() ({ \
  TCCR3A = 0; \
  TCCR3B = _BV(WGM32) | _BV(CS30); \
  OCR3A = SYSCLOCK * USECPERTICK / 1000000; \
  TCNT3 = 0; \
})
#if defined(CORE_OC3A_PIN)
#define TIMER_PWM_PIN        CORE_OC3A_PIN  /* Teensy */
#elif defined(__AVR_ATmega1280__)
#define TIMER_PWM_PIN        5  /* Arduino Mega */
#else
#error "Please add OC3A pin number here\n"
#endif


// defines for timer4 (10 bits, high speed option)
#elif defined(IR_USE_TIMER4_HS)
#define TIMER_RESET
#define TIMER_ENABLE_PWM     (TCCR4A |= _BV(COM4A1))
#define TIMER_DISABLE_PWM    (TCCR4A &= ~(_BV(COM4A1)))
#define TIMER_ENABLE_INTR    (TIMSK4 = _BV(TOIE4))
#define TIMER_DISABLE_INTR   (TIMSK4 = 0)
#define TIMER_INTR_NAME      TIMER4_OVF_vect
#define TIMER_CONFIG_KHZ(val) ({ \
  const uint16_t pwmval = SYSCLOCK / 2000 / (val); \
  TCCR4A = (1<<PWM4A); \
  TCCR4B = _BV(CS40); \
  TCCR4C = 0; \
  TCCR4D = (1<<WGM40); \
  TCCR4E = 0; \
  TC4H = pwmval >> 8; \
  OCR4C = pwmval; \
  TC4H = (pwmval / 3) >> 8; \
  OCR4A = (pwmval / 3) & 255; \
})
#define TIMER_CONFIG_NORMAL() ({ \
  TCCR4A = 0; \
  TCCR4B = _BV(CS40); \
  TCCR4C = 0; \
  TCCR4D = 0; \
  TCCR4E = 0; \
  TC4H = (SYSCLOCK * USECPERTICK / 1000000) >> 8; \
  OCR4C = (SYSCLOCK * USECPERTICK / 1000000) & 255; \
  TC4H = 0; \
  TCNT4 = 0; \
})
#if defined(CORE_OC4A_PIN)
#define TIMER_PWM_PIN        CORE_OC4A_PIN  /* Teensy */
#else
#error "Please add OC4A pin number here\n"
#endif


// defines for timer4 (16 bits)
#elif defined(IR_USE_TIMER4)
#define TIMER_RESET
#define TIMER_ENABLE_PWM     (TCCR4A |= _BV(COM4A1))
#define TIMER_DISABLE_PWM    (TCCR4A &= ~(_BV(COM4A1)))
#define TIMER_ENABLE_INTR    (TIMSK4 = _BV(OCIE4A))
#define TIMER_DISABLE_INTR   (TIMSK4 = 0)
#define TIMER_INTR_NAME      TIMER4_COMPA_vect
#define TIMER_CONFIG_KHZ(val) ({ \
  const uint16_t pwmval = SYSCLOCK / 2000 / (val); \
  TCCR4A = _BV(WGM41); \
  TCCR4B = _BV(WGM43) | _BV(CS40); \
  ICR4 = pwmval; \
  OCR4A = pwmval / 3; \
})
#define TIMER_CONFIG_NORMAL() ({ \
  TCCR4A = 0; \
  TCCR4B = _BV(WGM42) | _BV(CS40); \
  OCR4A = SYSCLOCK * USECPERTICK / 1000000; \
  TCNT4 = 0; \
})
#if defined(CORE_OC4A_PIN)
#define TIMER_PWM_PIN        CORE_OC4A_PIN
#elif defined(__AVR_ATmega1280__)
#define TIMER_PWM_PIN        6  /* Arduino Mega */
#else
#error "Please add OC4A pin number here\n"
#endif


// defines for timer5 (16 bits)
#elif defined(IR_USE_TIMER5)
#define TIMER_RESET
#define TIMER_ENABLE_PWM     (TCCR5A |= _BV(COM5A1))
#define TIMER_DISABLE_PWM    (TCCR5A &= ~(_BV(COM5A1)))
#define TIMER_ENABLE_INTR    (TIMSK5 = _BV(OCIE5A))
#define TIMER_DISABLE_INTR   (TIMSK5 = 0)
#define TIMER_INTR_NAME      TIMER5_COMPA_vect
#define TIMER_CONFIG_KHZ(val) ({ \
  const uint16_t pwmval = SYSCLOCK / 2000 / (val); \
  TCCR5A = _BV(WGM51); \
  TCCR5B = _BV(WGM53) | _BV(CS50); \
  ICR5 = pwmval; \
  OCR5A = pwmval / 3; \
})
#define TIMER_CONFIG_NORMAL() ({ \
  TCCR5A = 0; \
  TCCR5B = _BV(WGM52) | _BV(CS50); \
  OCR5A = SYSCLOCK * USECPERTICK / 1000000; \
  TCNT5 = 0; \
})
#if defined(CORE_OC5A_PIN)
#define TIMER_PWM_PIN        CORE_OC5A_PIN
#elif defined(__AVR_ATmega1280__)
#define TIMER_PWM_PIN        46  /* Arduino Mega */
#else
#error "Please add OC5A pin number here\n"
#endif


#else // unknown timer
#error "Internal code configuration error, no known IR_USE_TIMER# defined\n"
#endif


// defines for blinking the LED
#if defined(CORE_LED0_PIN)
#define BLINKLED       CORE_LED0_PIN
#define BLINKLED_ON()  (digitalWrite(CORE_LED0_PIN, HIGH))
#define BLINKLED_OFF() (digitalWrite(CORE_LED0_PIN, LOW))
#elif defined(__AVR_ATmega1280__)
#define BLINKLED       13
#define BLINKLED_ON()  (PORTB |= B10000000)
#define BLINKLED_OFF() (PORTB &= B01111111)
#elif defined(__AVR_ATmega644P__) || defined(__AVR_ATmega644__)
#define BLINKLED       0
#define BLINKLED_ON()  (PORTD |= B00000001)
#define BLINKLED_OFF() (PORTD &= B11111110)
#else
#define BLINKLED       13
#define BLINKLED_ON()  (PORTB |= B00100000)
#define BLINKLED_OFF() (PORTB &= B11011111)
#endif

#endif
